I have a Sunfire sub. Had a friend house-sit for a week while I was on vacation. He and some friends musta given it quite a work out, because when I returned it sounded horrible. Inspection revealed the need for the cones to be resurfaced. The sub was out of warranty, but Sunfire CS was EXTREMELY helpful & professional. Sent me the packaging (double boxed) and repaired the sub (and made internal upgrades) for a minimal charge (~$125?). No other problems to date. I have had the sub about 10yrs.
This puppy puts out a ton of bass, and can be hid in the corner. I would recommend it.

Robert